1. 03 2. (CH3)2S,

Q: What is the correct order of carbon-carbon bond lengths in ethane, ethylene and acetylene.

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Q: b. d. e. II H₂C-CH₂ H₂C- H₂C 0 CH-CH₂ HC—NHẬ -CH3 HC=C-CH₂-OH f. H₂C-NH₂ 37. For each molecule in…

A: Hybridization is defined as mixing of orbitals of different energy so as to rehybridized to form new…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: Answer: Depression in freezing point of a solution containing non-volatile solute is: ∆Tf=i×Kf×m…

Q: or False: 1. True or False: A reaction that is exothermic must be spontaneous. 2. True or False: A…

A: Exothermic reaction :- A reaction that releases energy from the system in the form of heat. ( i.e ∆H…

Q: This is an impossible formula.  If it were real, determine the molar mass of: KBr•9H2O   K =…

A: Here we are required to find the molar mass of given compound KBr.9H2O.

Q: How many atoms of hydrogen are there in 1 kg of methane (CH4)?

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Q: Draw structural formulas for the alkoxide lon and the alkyl(aryl)bromide that may be used in a…

A: Alkyl bromide reacts with alcohol to form an ether by the Williamson ether synthesis. The reaction…

Q: • Circle the strongest acid. FF ОН OH OFF

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Q: Calculate the kinetic energy of 150-g baseball moving at a speed of 40. m/s (89 mph). a) 6.0 J…

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Q: 8. Predict the sign of the change in entropy for the condensation of steam to liquid water. 9.…

A: Entropy means randomness. Higher the randomness of the system, higher will be its entropy.

Q: amide ion

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Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

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Q: 6. Using 0.25 M phosphate buffer, pH 7.2, how much of the stock you will need and how much of…

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Q: Some covalent bonds make compounds miscible with water while other covalent bonds make compounds…

A: The solubility of a compound depends on the like dissolve like rule, that is, a polar solute will…

Q: Conversion of one molecule of H20 to 02 releases how many e- ? A. 2 B. 4 C. 8 D. 6

A: Answer: This question is based on the change in oxidation number when water molecule gets oxidized…

Q: enthalpy a state function. Fill in the blank: 4. For a change that takes place at constant pressure,…

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Q: 2. Draw the following bond-line structures in dash-wedge notation, showing all implied hydrogens.…

A: bond line  is 2 dimensional  representation where as dash wedge is 3 dimensional representation.

Q: Complete the table (the correct value for cell D8 is 5.0 10-3). What is the value of cell D11? X

A: The mass (mg) of the Fe after the dilution in the solution is same as in the given volume of stock…

Q: III. Write the name of the following compounds.

A: We have given three compounds SO3, NCl3 and P2S5.We have to tell their names. Given compounds are…

Q: Use the following vapor pressure data to answer the questions: A B Liquid C₂H5Br CH3OH Vapor…

A: The vapor pressure can be used to predict the strength of intermolecular forces.  The vapor pressure…

Q: owing information is given for antimony at 1atm: 140.00°C 31.00°C heat solid = 0.2090 J/g °C heat…

A: Given ,  □Hfus = 161.1 J/g Mass (m) = 39.60 g Heat = m.c.□T 726° c ---> 631 °c <---> 631 °c…

Q: Classify the following atoms as having only ground state electrons, where all electrons occupy the…

A: To classify the following atoms as having only ground-state electrons, where all electrons occupy…

Q: balancing equation: use coefficient to balance the equation below. please check the screenshot

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Q: Q3. When the orgo students did the experiment, they weighed out 2.105 g of Salicylic acid  and mixed…

A: Answer: Molecular formula of Salicylic acid=C7H6O3 Molecular formula of Acetylsalicylic acid= C9H8O4…

Q: 0179 7. The volume of blood plasma in adults is 5.5 L The density of blood plasma is 1.03 body?…

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Q: Which elements are post-transition metals? A. Europium, Gadolinium, Terbium B. Uranium, Neptunium,…

A: Post-transition metals are also termed  as the poor metals which are a group of metals on the…

Q: Show the mechanism for the Diels-Alder reaction that you will perform during today's experiment. OH…

A: Diels-Alder :

Q: 9. Which of the following molecules has a nitrogen atom that is sp³ hybridized? Ex-100 Me N₂ B Me U…

A: The hybridization of an atom is determined by the presence of different types of electron density…

Q: 7. nickel and sulfate 8. copper (II) and hydroxide 9. potassium and hydrogen phosphate 10 samt

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Q: If you make 250 mL of a 20X stock solution on NaCl, how many grams of NaCl would you need in how…

A: Introduction To make a stock solution, weigh out the proper amount of a pure solid or measure out…

Q: Liquid nitrogen has a density of 0.808 g/ml, and boils at 77 K. Researchers often purchase liquid…

A: To calculate the ratio, we would first calculate the volume of nitrogen gas in L after vaporization.…

Q: The molar mass (to two decimal places) for Fe2(CO3)3 is ______________  g/mol.

A: Molar mass is mass of 1 Mole a substance.

Q: 2. The volume of a block-shaped object can be calculated using the formula: volume = length X width…

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Q: Predict the charge of the following ions. a) a sodium ion b) an oxide ion c) a calcium ion d) a…

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Q: A sample of xenon gas occupies a volume of 6.22 L at 59.0°C and 1.03 atm. 1°C. If it is desired to…

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Q: 5. Which elements are halogen elements? A. Fluorine, Chlorine, Bromine B. Calcium, Strontium, Barium…

A: We would use periodic table properties to answer these questions.    Note : As you have uploaded…

Q: Que't consider the reaction. 4N Hz (g) +50₂19) & Norg) + 6H₂olg using the standard thermodynamil…

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Q: Describe how you would prepare 200 ml (total volumn) of a solution that is 50% acetic acid by…

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Q: If you had 1 mol of Cr8(PO4)3 how many moles of Cr would there be?

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Q: 2. Find the pH for the following solutions if it contains: a.) 1.8 x 10-6 M Barium hydroxide b.)…

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Q: Consider the equilibrium for the transesterification reaction.How do you think the amount of…

A: #1:  The balanced equation for the esterification reaction is: RCOOH(Acid) + R"-OH(1-propanol)…

Q: How many grams of rubidium are in 3.49 x 1024 atoms of rubidium? Enter your answer in decimal form…

A: 1 mole atoms = 6.023 * 1023 atoms. molar mass of Rb = 85.4678 gmole  and mass of Rb = mole * molar…

Q: Identify one water-soluble impurity that could be removed by washing the recrystallized dulcin with…

A: To identify water-soluble impurity that could be removed by washing the recrystallized dulcin with…

Q: How is the term solubilty: Represent and quantify chemical reactions at the atomic level?

A: Solubility is the amount of substance dissolved in given amount of solvent at specific temperature.…

Q: 2. Calcium Flourite, CaF2, has a structure based on the fec lattice and a basis with Ca at 000 and…

A: Given  CaF2 has FCC structure. Ca(000),F(1/4 1/4 1/4),F(3/4 3/4 3/4)

Q: For a particular reaction at 187.3 °C, AG = -989.95 kJ, and AS = 662.97 J/K. Calculate AG for this…

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Q: O · Η HIN 0 N name the non-alkane functional groups p

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Q: Define each of the terms: 1. Crystal Lettice 2. Unit Cell 3. Parking Efficiency 4. Coordination…

A: we have to define the following terms    crystal lattice  unit cell  packing efficiency…

Q: The functional group(s) contained in the compound shown below is CH,NHCH,CH3 A) an amine. B) an…

A: Organic compounds are compounds which contain carbon and hydrogen. A functional group is a  moiety…

Q: What volume of hydrogen gas is produced when 45.3 g of iron reacts completely according to the…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.